If the cable is used in unqualified wire and cable products, it will be damaged due to current passing and high temperature. If accidentally touched, it may lead to electric shock or even fire.
Wire and cable are wire products used to transmit electric (magnetic) energy and information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables for short, and cables in a narrow sense refer to insulated cables, which can be defined as: an aggregate composed of the following parts; One or more insulated wire cores and their respective possible cladding, total protective layer and outer protective layer, and cables may also have additional uninsulated conductors.
Cable products should have the product quality inspection report issued by the nationally recognized quality inspection organization (the official seal of the manufacturer is required), the original product certificate and other materials, because regular and qualified manufacturers are regularly inspected by the regulatory authorities, and the products leave the factory with the inspection report of the quality inspection department. If not, you can refuse.
Conductor surface should be smooth, without broken wires, loose strands, jumpers, crush injuries and burrs; The surface of insulating layer should be smooth and uniform, with the same color; The surface of the outer sheath should be smooth and even, with uniform color, without obvious concave and convex, bulging, crevasse, fold, scratch and other phenomena; The surface of armor layer should be smooth and round, and there should be no defects such as curling, burr and package leakage.
The cable sheathed on the iron frame is bulky and heavy, which is not conducive to manual handling. Therefore, in order to reduce the error caused by unloading in cable product acceptance, the cable should be placed on a flat ground as far as possible, and forklift or tower crane must be used when unloading where there are no large and sharp stones or metal objects.
Legal basis:
Notice of the general office of the Ministry of Construction on strengthening the publicity, implementation and supervision of the construction quality acceptance specifications of building energy-saving projects
1. Building energy efficiency standards are the technical basis and basic criteria for realizing building energy efficiency, and seriously implementing building energy efficiency standards is the basic goal and requirement for doing a good job in building energy efficiency at this stage. The promulgation and implementation of the Code further improved the national standard system of building energy efficiency, which not only provided unified technical requirements for the quality acceptance of building energy efficiency projects, but also provided strong technical support and operational technical means for implementing the design standards and requirements of building energy efficiency, which was of great significance and role in strengthening the management of building energy efficiency, ensuring the quality of building energy efficiency projects and achieving the goals and requirements of building energy efficiency. All localities should take the promulgation, implementation and supervision of norms as an important task to implement Scientific Outlook on Development, strengthen administration according to law and promote building energy conservation, strengthen leadership and conscientiously implement them in construction activities.
Second, strengthening publicity and training is the basic requirement to ensure that relevant personnel accurately understand, master and implement the Code. All localities should formulate specific publicity and training programs in light of the actual situation, carry out various publicity and training activities in an organized and planned way, and strive to train the main managers and technicians of relevant construction units, supervision units, engineering quality supervision and building energy-saving management institutions in rotation during the year. To participate in the "standard" training hours can be included in the personal continuing education hours.